judging by the fact that it also uses 850, I think it would most likely go to cingular since t mobile only uses 1900, but who knows, it might be like the n gage qd, where it uses 850 and 1900 but t mobile still offers it. if you want it that much, you can look for independent carriers that sells import phone, for an upgrade with t mobile, I think you can get it for like >450, but no guarantees

I am a huge fan of nokia and have no conplaints except one, nokia has limited selection for CDMA network phons. Every phone I see that has a nice designe is GSM, I would many others would be very pleased if there were more CDMA selection.